柔性直流输电系统电磁环境分析  

Analysis of Electromagnetic Environment of VSC-HVDC

作　　者：刘兵[1] 阮江军[1] 韩海宏 余世峰[1] 吴田[1] 

机构地区：[1]武汉大学电气工程学院,武汉430072 [2]山西电力公司晋中供电分公司,晋中030600

出　　处：《高电压技术》2009年第11期2747-2752,共6页High Voltage Engineering

基　　金：国家电网公司重点科技项目(SGKJ[2007]106)~~

摘　　要：针对新兴的柔性直流输电,受国家电网公司委托,在国内率先开展其电磁环境研究,旨在为柔性直流输电工程的设计和实施提供有力的参考。分析了系统中采用的高频可关断器件的工作特点,辨析了柔性直流输电系统环境影响种类,初步验算了柔性直流输电系统产生的低频电场、低频磁场和各种高频电磁场。结果显示:柔性直流输电系统产生的低频电场和磁场远小于国际公认的容许值,换流装置产生的无线电干扰水平基本上小于相关国标现有限值规定,通过相关措施能基本滤除传导进入交、直流输电线的高频电流谐波,抑制它们产生的高频电磁干扰。总结出柔性直流输电系统电磁环境是友好的。To study the electromagnetic environment of VSC-HVDC to meet the requests of STATE GRID CORPO- RATION of CHINA to help design and control VSC-HVDC more rationally, the operating characteristics of high frequency power electron apparatus used in VSC-HVDC were analyzed, the electromagnetic environment effect of VSC-HVDC was also analyzed, and the low frequency electric field, low frequency magnetic field, and high frequency electromagnetism disturbance of VSC-HVDC were calculated approximately . The results show that the low-frequency electric field and low-frequency magnetic field produced by VSC-HVDC is far less than the limit of correlative international standard,RI produced by converter is slightly less than the limit of correlative international standard, high frequency harmonic current conducted in transmission line can be erased by correlative devices, and RI produced by those current can be rejected. The conclusion is drawn that electromagnetic environment of VSC-HVDC is friendly.

关 键 词：柔性直流输电 电磁环境 电场 磁场 电磁干扰 无线电干扰 

分 类 号：TM721.1[电气工程—电力系统及自动化]